Red Line Heavy ShockProof® Gear Oil – 1 Quart

For the most extreme protection against gear tooth breakage and shock loads, Red Line Heavy ShockProof® Gear Oil is the heaviest in the ShockProof series — engineered for heavily-loaded racing differentials, spools, and non-synchronized transmissions where failure is not an option.

Heavy ShockProof features a unique suspension of solid microscopic particles that act as an extreme pressure cushion, allowing the fluid to maintain a film thickness greater than a conventional 75W250 gear oil while retaining the low fluid drag and friction of a much lighter 75W90.

Key Features

• Unrivaled Load Capacity: Provides an unparalleled cushion between gear teeth, drastically reducing metal-to-metal contact and preventing tooth breakage under severe shock loading — ideal for drag launches and high-torque applications
• Low Drag, High Efficiency: Low fluid friction reduces drag and heat buildup for lower operating temperatures and maximum power transfer
• GL-5+ Racing Proven: Exceeds API GL-5 specifications — used across demanding racing applications including NHRA, Sprint/Midget, and Dirt Late Model
• LSD Compatible: Contains friction modifiers for proper operation in clutch-type Limited Slip Differentials
• Synthetic Ester Base: Superior thermal stability and shear resistance for consistent protection through extended race intervals

Specifications

• Part Number: 58204
• Volume: 1 Quart (946mL)
• Base: Synthetic Ester
• Standard: API GL-5+
• Application: Racing differentials, spools, non-synchronized transmissions, LSD

Note: Always verify compatibility with your specific differential or transmission before use. Not recommended for synchronized manual transmissions.